| L-赖氨酸修饰玻碳电极测定维生素C片中抗坏血酸含量的研究 |
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| 引用本文： | 李敏娇,;张述林,;罗袆,;王晓波. L-赖氨酸修饰玻碳电极测定维生素C片中抗坏血酸含量的研究[J]. 四川轻化工学院学报, 2008, 0(2): 67-70 |
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| 作者姓名： | 李敏娇, 张述林, 罗袆, 王晓波 |
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| 作者单位： | [1]四川理工学院化学系,四川自贡643000; [2]四川理工学院材料与化学工程系,四川自贡643000 |
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| 摘 要： | 文章研究了L-赖氨酸修饰玻碳电极的制备，采用快速循环伏安法测定维生素C片剂中抗坏血酸含量，并对实验条件进行了选择。结果表明，在pH值为4．8的磷酸盐缓冲溶液中测抗坏血酸浓度时，其线性形范围为0．0600～0．6000g．L^-1，R2=0．9872。该修饰电极用于抗坏血酸含量的分析，有良好的稳定性和抗干扰能力，结果令人满意。
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| 关 键 词： | 修饰玻碳电极 L-赖氨酸 维生素C 快速循环伏安法 |
Study on the Preparation of L-lysine Modified Glassy Carbon Electrode and the Determination of Vitamin C |
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| Affiliation: | LI Min-Jiao, ZHANG Shu-Lin, LUO Yi, WANG Xiao-bo (1. Dept. of Chemistry, Sichuan University of Science ＆ Engineering, Zigong 643000, China; 2.Material ＆ Chemical Engineering Dept., Sichuan University of Science ＆ Engineering, Zigong 643000, China) |
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| Abstract: | The preparation of the L-lysine modified glassy carbon electrode was studied, and ascorbic acid content of Vitamin C was determined by fast cyclic vohammetry. Then the experimental condition was chosen. The experimental results showed that the linear range for determination of aseorbie acid was 0.0600-0.6000g. L^-1 in phosphate buffer solutions（pH=4.8）, the related coefficient was -0.9941. The L-lysine modified GCE can be used for the analysis of ascorbic acid content, which had good stability and strong anti-interference. The result of the method was satisfactory. |
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| Keywords: | GCE L-lysine vitamin C fast cyclic vohammetry |
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